So, open the boot and spray lubricant. I will try that. It seems that its the tie rod that making the sound, but I will try lubricant in all the moving joints.
Oh and taking it to a decent mechanic shop, I've tried that. As soon as they hear what kind of car it is, they say no. Even a Ford shop.
Remember there isn't many mustangs over here. Only about 1700 of them.
Mods: Magnapacks, BBK X-pipe with cats, BBK CAI, hood struts, KYB Shocks/Struts, Eibach Pro springs, SS Inserts, CDC Light bar, Chrome 17" Bullits with Nitto 555 and N2O with dual purge